Solo de Zaldívar, Erick, Víctor Montre-Águila, and Francisco Maturana-Miranda. 2022. “Employment Trajectories and Economic Specialization in the Communes of the Ñuble Region in 1982, 1992, 2002, and 2017”. Urbano 25 (46): 20-29. https://doi.org/10.22320/07183607.2022.25.46.02.